Surface-mounting
Thermostats
Series ATH.-SW-..
B 60.3035.0
Operating Instructions
02.03/00408320
ATHf-SW-..
ATHs-SW-..
Please read these Operating Instructions before commissioning the instrument. Keep the
manual in a place which is accessible to all users at all times. Please assist us to improve
these operating instructions, where necessary. Your suggestions will be appreciated.
Phone +49 661 6003-0
Fax +49 661 6003-607
All necessary settings and possible adjustments inside the instrument are described in
these operating instructions. However, if any problems should still arise during commissioning, you are asked not to carry out any unauthorized manipulations on the unit. You
could endanger your rights under the instrument warranty! Please contact the nearest
subsidiary or the head office in such a case.
Contents
Page
1 Introduction ............................................................................... 5
1.1 Typographical conventions ...................................................................... 5
1.1.1 Warning signs .............................................................................................. 5
1.1.2 Note signs ................................................................................................... 5
1.2 Application ................................................................................................. 6
1.3 Marking ...................................................................................................... 6
1.4 Safety notes ............................................................................................... 6
2 Instrument identification .......................................................... 7
2.1 Nameplate .................................................................................................. 7
2.2 Type designation ....................................................................................... 7
3 Mounting .................................................................................... 8
3.1 Dimensions ................................................................................................ 8
3.2 Opening the housing ............................................................................... 10
3.3 Fixing the surface-mounting thermostat .............................................. 10
3.3.1 Code s (rigid stem) .................................................................................... 10
3.3.2 Code f (with capillary) ................................................................................ 10
3.4 Capillary / temperature probe / pocket ................................................. 10
3.4.1 General ...................................................................................................... 10
3.4.2 Approved probes and pockets ................................................................. 11
3.5 Permissible loading on pocket .............................................................. 13
3.5.1 Pockets U, US, UZ, UZS ........................................................................... 13
3.6 Mounting the probe ................................................................................. 17
4 Installation ............................................................................... 18
4.1 Regulations and notes ............................................................................ 18
4.2 Electrical connection .............................................................................. 19
4.2.1 Closing the housing .................................................................................. 21
Contents
Page
5 Settings .................................................................................... 22
5.1 Setpoint / limit setting ............................................................................ 22
5.1.1 TW, STW (STB), STB ................................................................................. 22
5.2 Resetting the STB ................................................................................... 23
5.3 Self-monitoring ........................................................................................ 24
5.3.1 Response to a system fracture ................................................................. 24
5.3.2 Response to falling below the temperature limit ....................................... 24
5.4 Use of the STW (STB) as STB ................................................................. 24
6 Instrument description ........................................................... 25
6.1 Technical data ......................................................................................... 25
5
1 Introduction
1.1 Typographical conventions
1.1.1 Warning signs
1.1.2 Note signs
abc
1
Foonote
Footnotes are comments which
refer to specific parts
of the text. Footnotes
consist of two parts:
Marking in the text and the footnote text.
The text markings are arranged as continuous superscript numbers.
The footnot text (in smaller typeface) is placed at the bottom of the page and
starts with a superscript number.
✱ Action
This symbol indicates that an
action to be performed
is described.
The individual steps are marked by this asterisk, e. g.
✱
Open housing
V
Danger
This symbol is used where there may be
danger to personnel
if the instruc-
tions are disregarded or not followed accurately.
A
Caution
This symbol is used where there may be
damage to equipment
if the instruc-
tions are disregarded or not followed accurately.
H
Note
This symbol is used to draw your
special attention
to a remark.
v
Reference
This symbol refers to
additional information
in other chapters or sections.
1 Introduction
6
1.2 Application
Surface-mounting thermostats ATH-SW series are approved as:
❏
Temperature monitor (TW)
❏
Safety temperature limiter (STB).
❏
Safety temperature monitor STW (STB)
❏
Type examination to:
- DIN 3440
- Pressure Equipment Directive 97/23/EC
(all types, except ATH.-SW-2 and
ATH.-SW-22)
1.3 Marking
1.4 Safety notes
Physical and toxicological properties of the media which may escape in the
event of a system fracture:
A
Cutting through or kinking the capillary will result in permanent instrument
failure!
H
Surface-mounting twin thermostats ATH-SW series conform to VDE 0631.
End of scale
°C
Danger-
ous
reaction
Fire/explosion
hazard
Water
contami-
nation
Tox ic ol oga l d at a
Ignition
temp.
°C
Explosion
limit
% v/v
irritant danger
to
health
toxic
liquid-filled
≥
+200°C < +200 no +280 1.2 — 7.5 yes yes
1)
no
≥
+200°C ≤+350 no +490 1.0 — 3.5 yes yes
1)
no
gas-filled
≥
+400°C ≤+500 no
H
1)
The filling liquid may escape in the event of a system fracture. At present
there is no restrictive statement from the health authorities concerning any
danger to health over short periods and at low concentrations, e.g. after a
fracture of the measuring system.
7
2 Instrument identification
2.1 Nameplate
(1) Type code (see type designation below),
part number, serial number
(2) Control range /limit value, contact rating, permissible ambient temperature,
enclosure protection
(3) Mark of conformity
2.2 Type designation
Type
designation
Type s
(1)
(3)
(2)
Typ:
AC
A
V
IP
1K/min
System
I
°C
System
II
Tu
V
T
II
A
AC
ATH-SW-2
0 +100
10(2)
230
80
54
TW89201
TN
Geprüft
DIN
ATH . -SW /
ATH surface-mounting thermostat with microswitch
s with screw-in pocket attached to housing (rigid stem)
(pocket U or UZ)
f with capillary (pocket U)
-SW die-cast aluminium housing, dust-tight and
proof against water jets, IP65 enclosure
-20 temperature monitor (TW) with changeover contact
-20 safety temperature monitor STW (STB),
with changeover contact
-70 safety temperature limiter (STB),
with break contact (n.c.) and lock-out
/au snap-action switch contact gold-plated
Single thermostatsTwin thermostats
ATH .- SW -2
ATH .- SW -2 0
ATH .- SW -7 0
ATH .- SW -2 2
ATH .- SW -2 20
ATH .- SW -2 70
ATH.-SW-2020
ATH.-SW-2070
ATH.-SW-7070
8
3 Mounting
3.1 Dimensions
ATHs-SW-..,
with pocket U
ATHs-SW-..,
with pocket UZS
hex
cable gland
M 20x1.5
80
Ø
D
S
G
25
100
100
cable gland
M 20x1.5
100
80
25
100
S
D
Ø 90
Ø91
Ø 30
9
3 Mounting
ATHf-SW-..,
with plain
cylindrical bulb
A,
no
pocket
ATHf-SW-..,
with pocket U
cable gland
M 20x1.5
100
100
80
66
86
Ø 8
Ø 5
d
L
15
25
cable gland
M 20x1.5
hex
100
100
80
66
86
Ø 8
Ø 5
15
25
L1
G
D
S
3 Mounting
10
3.2 Opening the housing
Opening
✱
Unscrew the 4 cover screws
✱
Remove housing top
3.3 Fixing the surface-mounting thermostat
Nominal
position (NL)
to DIN 16 257, NL 0 — NL 90 (other NL on request)
3.3.1 Code s (rigid stem)
The housing spigot is secured by a fixing screw in the enlarged pocket opening.
3.3.2 Code f (with capillary)
Fixing the thermostat head
by 4 screws through base of housing,
capillary exit at side of housing
3.4 Capillary / temperature probe / pocket
3.4.1 General
V
Take care that the seal is seated correctly!
A
Cutting through or kinking the capillary of the surface-mounting thermostats
will result in permanent instrument failure!
Minimum permissible bending radius of the capillary is 5 mm.
The temperature probe must be installed in JUMO pockets, otherwise the
approval of the surface-mounting thermostat becomes invalid.
H
The temperature probe must be completely immersed in the medium.
To ensure their overall response accuracy, the thermostats must only be used
in conjunction with the pockets supplied by the factory.
When used in air, a process connection without pocket must be chosen.
11
3 Mounting
3.4.2 Approved probes and pockets
AUUZ
Plain cylindrical bulb Screw-in pocket with
screw-in spigot Form A
to DIN 3852/2,
with fixing screw.
Screw-in pocket
with fixing screw and
extension
US UZS
Weld-in pocke t
with fixing screw and clamp
Weld-in pocket
with fixing screw and
extension
L
_15
Ød
SW
ØD
G
L1
S
hex
27
S
ØD
Ø 25
Ø 8
Ø 12
Ø30
3 Mounting
12
UO UZO
Screw-in pocket open at
end, with screw-in spigot
Form A to DIN 3852/2,
with fixing screw
For code s, above +150°C
probe temperature, screw-in
pocket open at end, with
screw-in spigot Form A to
DIN 3852/2, with fixing screw
and extension
QV
For code f,
thead at both ends, for
retrofitting on capillary.
Max. probe temperature
+200°C.
For code f,
sealing gland for
retrofitting on capillary.
Max. probe temperature
+200°C.
13
3 Mounting
3.5 Permissible loading on pocket
3.5.1 Pockets U, US, UZ, UZS
3.5.1.1 Steel pockets
Material
Tube: St 35.8 I
Screw-in nipple up to 300°C: 9 SMnPb.28 K
Screw-in nipple up to 450°C: 16 Mo 3 (turned groove)
Weld-in nipple: 16 Mo 3 (no groove)
Loading
A
The values below refer to the maximum loading on the probe mounting concerned. The maximum pressure that can be sealed depends on the installation
conditions and may therefore be lower.
Te mp e ra tu re
Tube diameter D
8 x 0.75 mm or taper 15 x 0.75 mm
Max. permissible pressure
100°C 89 bar 48 bar
150°C 83 bar 45 bar
200°C 78 bar 42 bar
300°C 59 bar 32 bar
350°C 50 bar 27 bar
400°C 46 bar 25 bar
450°C 24 bar 13 bar
3 Mounting
14
Permissible
flow velocity
Permissible flow velocity (m/sec) at maximum permissible pressure loading
and different immersion tube lengths S
Permissible flow velocity (m/sec) at maximum permissible pressure loading
and different immersion tube temperatures t.
Temperature: +200°C
Thermal medium:
air ( 1 )
water, oil ( 2 )
Tube diameter D:
08mm
- - - - - - - - - - - -
10 mm
. . . . . . . . . . . . . .
15 mm
A
The values below refer to the maximum loading on the probe mounting concerned. The maximum pressure that can be sealed depends on the installation
conditions and may therefore be lower.
Temperature: +200°C
Thermal medium:
air ( 1 )
water, oil ( 2 )
Tube diameter D:
08mm
- - - - - - - - - - - -
10 mm
. . . . . . . . . . . . . .
15 mm
15
3 Mounting
3.5.1.2 Stainless steel pockets
Material
Permissible
flow velocity
on request
3.5.1.3 Brass pockets
Material
Permissible
flow velocity
on request
Tube and nipple: X 6 CrNiMoTl 17 122
Te mp e ra tu re
Tube diameter D
8 x 0.75 mm or taper 15 x 0.75 mm
Maximum permissible pressure
100°C 92 bar 50 bar
150°C 88 bar 48 bar
200°C 83 bar 45 bar
300°C 72 bar 39 bar
400°C 67 bar 36 bar
Tube and nipple: CuZn
Te mp e ra tu re
Tube diameter D
8 x 0.75 mm 15 x 0.75 mm
Maximum permissible pressure
100°C 50 bar 27 bar
150°C 48 bar 26 bar
3 Mounting
16
3.5.1.4 Probe mountings A, UO, UZO, Q und V
(probe in direct contact with medium)
A
The process connections
A, UO, UZO, Q and V
may
only
be used in unpres-
surized media.
A
To ensure their overall accuracy, the thermostats may
only
be used together
with the pockets supplied by the factory.
Fitting several probes into a common pocket is only permitted with 2 or 3
cylindrical probes with 6 mm diameter and pockets 15 x 0.75 mm.
When fitting 2 probes into a common pocket, the factory-supplied spring clip
must be fitted inside the pocket.
With pockets U, US, UZ and UZS in the materials St 35.8I/16Mo 3, the permissible operating life at operating temperatures above 420°C is limited to
200,000 hours. Please refer to the requirements of TRD 508 for application in
this range.
17
3 Mounting
3.6 Mounting the probe
H
The temperature probe ( 2 ) must be completely immersed in the medium,
otherwise there will be appreciable deviation from the switching point.
In the case of thermostats with capillary (code f), the temperature probe is
secured in the pocket by a clamp ( 1 ) with mountings U and US.
(1)
(2)
18
4 Installation
4.1 Regulations and notes
V
❏
The electrical connection must only be carried out by qualified personnel.
❏
The choice of cable, the installation and the electrical connection must conform to the requirements of VDE 0100 “Regulations on the installation of
power circuits with nominal voltages below 1000 V” or the appropriate local
regulations.
❏
Ensure that the instrument is completely isolated from the mains supply
before carrying out work where live components may be touched.
❏
Earth the instrument at terminal PE to the protective earth. This cable must
have at least the same cross-section as the supply cable. Earthing cables
must be wired in star configuration, to a common earthing point which is
connected to the protective earth of the supply. Do not loop the earthing
cables, i.e. do not run them from one instrument to another.
❏
Apart from faulty installation, incorrect settings on the thermostat may also
affect the proper functioning of the subsequent process or lead to damage.
Adjustment should therefore only be made by qualified personnel. Please
observe the corresponding safety regulations in this matter.
19
4 Installation
4.2 Electrical connection
Steps
✱
Open housing. ➩ Chapter 3.2 “Opening the housing”, page 10
.
✱
Pull off protective cover.
✱
Pass the connecting cable (cable diameter 5 to 10 mm) through the cable
gland ( A ). Screw connection for up to 2.5 mm
2
cable cross-section.
✱
Make the connection to the terminals ( 1, 2 and 4 ) according to the connection diagram.
✱
Connect protective earth conductor to the terminal PE .
✱
Replace protective cover.
✱
The reset button ( B ) on the STB must be free to move.
Connection
diagrams
Single thermostat
1
2
4
1
2
( A )
( B )
H
Connection suitable for fixed wiring. Cable entry without fixed strain relief.
Type X attachment (without any special tools).
TW, STW (STB) with
changeover contact
STB with break contact
and lockout
4 Installation
20
Connection
diagrams
Twin thermostat
SystemI and
II:
with changeover contact,
switching action: TW, STW
SystemI: with changeover contact,
switching action: TW, STW
System
II:
with break contact and
lockout,
switching action: STB
SystemI and
II:
with break contact and lockout,
switching action: STB
21
4 Installation
4.2.1 Closing the housing
Thermostats as
TW, STW (STB),
STB
✱
Make sure that the plastic seal ( 1 ) in the housing base ( 3 ) is seated correctly.
✱
Place the housing top ( 2 ) onto the housing base ( 3 ).
✱
Tighten the cover screws ( 4 ).
hex
cable gland
M 20x1.5
(1)
(3)
(2)
(4)
(4)
(4)
(4)
22
5 Settings
5.1 Setpoint / limit setting
5.1.1 TW, STW (STB), STB
✱
Open housing.
➩
Chapter 3.2 “Opening the housing”, page 10.
✱
Set the limit on the setpoint spindle ( 5 ) using a screwdriver.
✱
Close housing
➩
Chapter 4.2.1 “Closing the housing”, page 21.
(1) Upper stop
(2) Setpoint marker
(3) Lower stop
( 4 ) Scale graduation
(5) Setpoint spindle
23
5 Settings
5.2 Resetting the STB
After the temperature has dropped by about 10% of the span below the set
limit (safe temperature limit), the microswitch can be reset.
✱
Remove the cover screws ( 1 ),
lift cover ( 2 ).
✱
Press reset button ( 3 )
until the microswitch is reset.
✱
Put cover back on ( 2 ), tighten
cover screws ( 1 ).
(1)
(1)
(1)
(1)
(2)
1
2
4
1
2
(1)
(1)
(1)
(1)
(2)
(3)
5 Settings
24
5.3 Self-monitoring
5.3.1 Response to a system fracture
5.3.2 Response to falling below the temperature limit
5.4 Use of the STW (STB) as STB
H
On the STB and STW (STB), a fracture of the measuring system (leakage) will
cause the circuit to open
permanently
.
On the STB, the microswitch will additionally be locked.
H
If the probe cools down to below the minimum temperature of -10°C , the circuit will open (STW (STB) and STB).
As the probe temperature rises to above the minimum temperature, the STB
has to be reset manually.
➩
Chapter 5.2 “Resetting the STB”, page 23.
The STW resets itself automatically.
V
The lockout function to DIN 3440 must be ensured by the connected circuitry.
This circuit must conform to DIN VDE 0116, Section 8.7.
25
6 Instrument description
6.1 Technical data
Permissible
ambient
temperature
Permissible
probe
temperature
in operation:
end of scale +15% max.
Permissible
storage
temperature
+50°C max., -50°C min.
Cover and
housing base
die-cast aluminium, painted
Connecting
cable
diameter 5 to 10 mm, max. conductor cross-section 2.5 mm
2
Switching
differential in %
of range span
Capillary Thermostat head with end of scale
TW STW (STB), STB
max. +80°C +80°C +80°C
min.
-40°C -40°C +80°C < 200°C
-20°C -20°C +80°C
≥
200°C ≤ 350°C
-40°C -40°C +80°C > 350°C ≤ 500°C
Code
with liquid-filled measuring system
Nom. value Possible actual value
TW
33 max. 4standard
66 max. 8on request
1.5 1 max. 2 at extra cost
with gas-filled measuring system
54 max. 8standard
98 max. 12on request
2 1.5 max. 2.5 at extra cost
Code
with liquid-filled measuring system
Nominal value Possible actual value
STW (STB)
54 max. 6standard
98 max. 11on request
2 1 max. 3 at extra cost
with gas-filled measuring system
75 max. 12standard
98 max. 16on request
2 1.5 max. 3 at extra cost
6 Instrument description
26
Contact rating
Fuse required
see contact rating
Enclosure
protection
EN 60 529 - IP65, operation in normal conditions
Operating
medium
water, oil, air, superheated steam
Time constant
t
0.632
Action
according to EN 60 730-1
TW:
Type 2BL = automatic action
with micro disconnection in operation,
no auxiliary power source required.
STB, STW (STB):
Type 2BK = automatic action
with micro disconnection in operation,
with break protection.
Weight
approx. 1.0 kg
TW with differentials 3, 5, 6, 9% / STW (STB) 5, 7, 9% and STB
10 (2) A, 230 V AC +10%,
p.f. = 1 (0.6)
0.25 A, 230 V DC +10%
TW with differential 1.5% / STW (STB) 2%
6 (1.2) A, 230 V AC +10%,
p.f. = 1 (0.6)
0.15 A, 230 V DC +10%
microswitch gold-plated, code /au
0.1 A, 24 V AC/ DC
contact resistance 2.5 — 10 m
Ω
in water in oil in air / superheated
steam
≤
45 sec
≤
60 sec
≤
120 sec
27
6 Instrument description
Material of
capillary and
probe
Minimum
bending radius
of capillary
5mm
Switching point
accuracy
in % of scale span,
referred to setpoint or limit at T
amb
+22°C
in upper third of scale
at scale start
Mean ambient
temperature
error
in % of scale span, referred to limit value.
A deviation of the ambient temperature at the thermostat head and / or the
capillary from the calibration ambient temperature of +22°C produces a shift of
the switching point:
higher ambient temperature = lower switching point
lower ambient temperature = higher switching point
End of scale Capillary Probe
up to +200°C copper, Mat. Ref. 2.0090
1.5 mm dia.
copper, Mat. Ref. 2.0090
brazed
up to +350°C copper, Mat. Ref. 2.0090
1.5 mm dia.
st. steel, Mat. Ref. 1.4571
brazed
up to +500°C st. steel, Mat. Ref. 1.4571
1.5 mm dia.
st. steel, Mat. Ref. 1.4571
welded
at extra cost
up to +350°C st. steel, Mat. Ref. 1.4571
1.5 mm dia.
st. steel, Mat. Ref. 1.4571
welded
+0
-5
%
+0
-10
%
Surface-mounting thermostats with end of scale
< +200°C
≥
+200°C ≤ +350°C
TW STB/STW (STB) TW STB/STW (STB)
due to thermostat head, % per °C
0.08 0.17 0.06 0.13
due to capillary, % per °C per meter length
0.047 0.054 0.09 0.11
Surface-mounting thermostats with end of scale
> +350°C ≤ +500°C
TW STB/STW (STB)
due to thermostat head, % per °C
0.14 0.12
due to capillary, % per °C per meter length
0.04 0.03
M. K. JUCHHEIM GmbH & Co
Street address:
Moltkestraße 13 - 31
36039 Fulda, Germany
Delivery address:
Mackenrodtstraße 14
36039 Fulda, Germany
Postal address:
36035 Fulda, Germany
Phone: +49 661 6003-0
Fax: +49 661 6003-607
E-mail: mail@jumo.net
Internet: www.jumo.net
JUMO Instrument Co. Ltd.
JUMO House
Temple Bank, Riverway
Harlow, Essex CM20 2TT, UK
Phone: +44 1279 635533
Fax: +44 1279 635262
E-mail: sales@jumo.co.uk
Internet: www.jumo.co.uk
JUMO PROCESS CONTROL INC.
885 Fox Chase, Suite 103
Coatesville, PA 19320, USA
Phone: 610-380-8002
1-800-554-JUMO
Fax: 610-380-8009
E-mail:
info@JumoUSA.com
Internet: www.JumoUSA.com
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